2#轴线
语言学练习Exercise2
Chapter 2 5
Exercises
I. Fill in the blanks. 11. _____ is the smallest linguistic unit. Phoneme 12. According to _____, when there is a choice as to where to place a consonant, it is put into the onset rather than the coda. the maximal onset principle
Chapter 2 7
Exercises
II. Choose the best answer. 15. An aspirated p, an unaspirated p and an unreleased p are _____ of the p phoneme. A. analogues B. tagmemes C. morphemes D. allophones D 16. The opening between the vocal cords is sometimes referred to as _____. A. glottis B. vocal cavity C. pharynx D. uvula A
Chapter 2 14
Exercises
III. Decide whether the following statements are true [T] or false [F]. __ 29. Two sounds are in free variation when they occur in the same environment and do not contrast, namely, the substitution of one for the other does not produce a different word, but merely a different pronunciation. T __ 30. [p] is voiced bilabial stop. F
我的揪痧瘾（2020、2）
我的揪痧瘾（2020、2）我的揪痧瘾医⽣在线⽹2008/12/1709:22来源：我叫⼩美，⼩时侯经常看见⼈们揪痧，但从没体验过，是在我⾼中后，有⼀次重感冒，吃药也不见好，晚上妈妈说我给你揪揪痧吧，我没说什么，妈妈就在我脖⼦后边揪开了，刚开始还不是很疼，但随着吧吧的揪痧声，妈妈的⼿劲越来越⼤，我疼的乱叫，妈妈说痧很重，必须得揪透了才⾏，不管我怎么喊叫，妈妈就是不停⼿，⽽且我越动她就越⽤⼒，我只好咬着⽛强忍着，妈妈从脖⼦⼀直连着揪到肩膀，⼜把整个后背都揪了个遍.我以为终于揪完了，可妈妈⼜在我前胸揪了起来，特别疼，我眼泪都出来了，可妈妈就是不⼿软，揪了⼀个多⼩时，只到把我上⾝揪的紫⿊紫⿊的没⼀块好地⽅才罢⼿，揪出我⼀⾝汗，可别说，揪完我就特轻松舒服了.从此以后我⼀感冒发烧的就让妈妈给揪，我还真喜欢上了这种痛并很快乐的感觉.隔⼀段时间不舒服了就让⽼妈给揪揪全⾝.后来结婚了，我很希望⽼公能给我好好揪⼀次，可他不喜欢揪，总也不给我揪，⽽且他不舒服也不让我给他揪.有⼀次我发烧，晚上实在难受的不⾏，让⽼公给揪揪他怎么也不肯，后来看我不⾏就给我在后背刮了刮痧，可我总觉的没有揪痧的过瘾.⽣完孩⼦后我落下了腰疼的⽑病，去诊所拔了⼏次罐后，感觉挺管⽤，⽼公看我腰疼的直不起来也很着急，后来我治我的腰学会了拔罐，经常在我腰疼的时候给我拔罐、⾛罐、按摩、揪痧等，现在⽼公拔罐揪痧的技术很⾼，不光给我整治腰，在我感冒的时候也会给我揪痧、拔罐，现在我⼜可以感受揪痧拔罐了。
在⽼公的经常拔罐按摩下我的腰疼的次数少多了。
在我的影响下⽼公也爱上了揪痧拔罐，在他不舒服的时候，我也会很体贴的为他揪痧拔罐，他也没那么怕疼了。
现在⽼公⼀不舒服就主动让我给他揪痧。
我们两经常是旧痕未去⼜添新伤，但我们都很快乐！⽼公有⼀次在外地感冒了给我打电话说：“⽼婆我越来越离不开你了，你要在我⾝边就可以给我揪痧了，我真的好难受。
”我说：“你以前不是怕疼⽼不让揪吗？现在想起我的好了？你到外边诊所拔拔罐吧！回来我给你揪。
周边地面 2
周边地面——对没有地下室的建筑指底层房间外墙内侧两米范围内的地面。
对有地下室埋墙的建筑，指从室外地面和埋墙的交线算起向下两米内为周边地面。
非周边地面——对没有地下室的房间指底层地面中周边地面以外的部分。
有地下室埋墙的建筑，非周边地面指埋墙和地面面积的和减去从室外地面和埋墙交线算起向下两米的面积。
关于周边地面和非周边地面的几点说明1．周边地面和非周边地面的定义周边地面指距外墙内表面2m以内的地面，其余部分划为非周边地面。
位于室外地面以下的外墙（地下室外墙）应从与室外地面相平的墙壁算起，往下2m范围内为周边地面，其余部分划为非周边地面。
2．节能标准中对周边地面和非周边地面传热阻的计算《民用建筑节能设计标准》（采暖居住部分）JGJ26-95和《公共建筑节能设计标准》GB50189-2005对周边地面和非周边地面热阻采用了不同的计算方法，应分别对待。
A) 居住建筑：换热阻计算依据来源于《供热工程》（贺平孙刚编著）。
由于室内热量通过地面传到室外的路程长短不同，即热阻值不同，靠近外墙的室内地面，距离室外路程短，热阻值小，传热量大，反之远离外墙的地面热阻值大，传热量小，离外墙8m以远的地面，传热量基本不变。
基于上述情况，在工程上一般采用近似方法计算，把地面沿外墙平行的方向分成四个计算地带（每2m为一个地带，8m以外地面按第四地带考虑），如图1示。
1) 对于贴土非保温地面（组成地面的各层材料导热系数λ都大于1.16W/m?℃），各地带的传热系数和换热阻如下：周边地面传热系数限值为0.52 W / m2·℃地区，考虑到非保温地面第一地带（周边地面）的传热系数为0.47 W / m2·℃，小于限值0.5 2W / m2·℃,可不做保温；非周边地面（第二、三、四地带）不做保温时传热系数最大值为0.23 W / m2·℃,小于限值0.3 W / m2·℃，同样也能满足非周边地面限值的要求。
2020年考研英语(二)真题及答案
2020年全国硕士研究生入学统一考试（英语二）试题Section I Use of EnglishDirections:Read the following text Choose the best word(s)for each numbered blank and mark A,B,C or D on the ANSWER SHEET.(10points)Being a good parent is,of course,what every parent would like to be.But defining what it means to be a good parent is undoubtedly very1,particularly since children respond differently to the same style of parenting.A calm,rule-following child might respond better to a different sort of parenting than,2,a younger sibling.3,There’s another sort of parent that s a bit easier to4:a patient parent. Children of every age benefit from patient parenting.Still,5every parent would like to be patient,this is no easy6.Sometimes parents get exhausted and frustrated and are unable to maintain a7and composed style with their kids.I understand this.You’re only human.and sometimes your kids can8you just a little too far.And then the9happens:You lose your patience and either scream at your kids or say something that was a bit too10and does nobody any good.You wish that you could 11the clock and start over,We’ve all been there:12,even though it’s common,it’s important to keep in mind that in a single moment of fatigue.you can say something to your child that you may13for a long time.Ibis may not only do damage to your relationship with.your child but also14 your child’s self-esteem.If you consistently lose your15with your kids.then you are inadvertently modeling a lack of emotional control for your kids.We are all becoming increasingly aware of the16of modeling tolerance and patience for the younger generation.This is a skill that will help them all throughout life.In fact,the ability to emotionally regulate or maintain emotional control when17by stress is one of the most important of all life’s skillsCertainly,it’s incredibly18to maintain patience at all times with your children.A more practical goal is to tr to the best of your ability,to be as tolerant and composed as you can when faced with19situations involving your children.I can promise you this:As a result of working toward this goal.you and your children will benefitand20from stressful moments feeling better physically and emotionally.1.[A]tedious[B]pleasant[C]instructive[D]tricky2.[A]in addition[B]for example[C]at once[D]by accident3.[A]fortunately[B]occasionally[C]accordingly[D]eventually4.[A]amuse[B]assist[C]describe[D]train5.[A]while[B]because[C]unless[1)]once6.[A]answer[B]task[C]choice[D]access7.[A]tolerant[B]formal[C]rigid[D]critical8.[A]move[B]drag[C]push[D]send9.[A]mysterious[B]illogical[C]suspicious[D]inevitable10.[A]boring[B]naive[C]harsh[D]vague11.[A]turn back[B]take apart[C]set aside[D]cover up12.[A]overall[B]instead[C]however[D]otherwise13.[A]like[B]miss[C]believe[D]regret14.[A]raise[B]affect[C]justify[D]reflect15[A]time[B]bond[C]race[D]cool16.[A]nature[B]secret[C]importance[D]context17.[A]cheated[B]defeated[C]confused[D]confronted1L[A]terrible[B]hard[C]strange[D]wrong19.[A]trying[B]changing[C]exciting[D]surprising20.[A]hide[B]emerge[C]withdraw[D]escapeSection II Reading ComprehensionPart ADirections:Read the following four texts.Answer the questions below each text by choosing A,B,C or D.Mark your answers on the ANSWER SHEET.(40points)Text1Rats and other animals need to be highly at tuned to social signals from others so that can identify friends to cooperate with and enemies to avoid.To find out if this extends to non-living beings,Loleh Quinn at the University of California,San Diego,and her colleagues tested whether rats can detect social signals from robotic rats.They housed eight adult rats with two types of robotic rat—one social anti one asocial—for5our days.The robots rats were quite minimalist,resembling a chunkier version of a computer mouse with wheels-to move around and colorful markings.During the experiment,the social robot rat followed the living rats around, played with the same toys,and opened caged doors to let trapped rats escape. Meanwhile,the asocial robot simply moved forwards and backwards and side to side Next,the researchers tapped the robots in cages and gave the rats the opportunity to release them by pressing a lever.Across18trials each,the living rats were52percent more likely on average to set the social robot free than the asocial one.This suggests that the rats perceived the social robot as a genuine social being.They may have bonded more with the social robot because it displayed behaviours like communal exploring and playing. This could lead to the rats better remembering having freed it earlier,and wanting the robot to return the favour when they get trapped,says Quinn.The readiness of the rats to befriend the social robot was surprising given its minimal design.The robot was the same size as a regular rat but resembled a simple plastic box on wheels.“We’d assumed we’d have to give it a moving head and tail, facial features,and put a scene on it to make it smell like a real rat,but that wasn’t necessary,”says Janet Wiles at the University of Queensland in Australia,who helped with the research.The finding shows how sensitive rats are to social cues,even when they come from basic robots.Similarly,children tend to treat robots as if they are fellow beings, even when they displayonly simple social signals.”We humans seem to be fascinated by robots,and it turns out other animals are too,”says Wiles.21.Quinn and her colleagues conducted a test to see if rats can[A]pickup social signals from non-living rats[B]distinguish a friendly rat from a hostile one[q attain sociable traits through special training[D]send out warming messages to their fellow22.What did the social robot do during the experiment?[A]It followed the social robot.[B]It played with some toys.[C]It set the trapped Tats free.[D]It moved around alone.23.According to Quinn,the rats released the social robot because they[A]tried to practice a means of escape[B]expected it to do the same in return[C]wanted to display their intelligence[D]considered that an interesting game24.James Wiles notes that rats______[A]can remember other rat’s facial features[B]differentiate smells better than sizes[C]respond more to cations than to looks[D]can be scared by a plastic box on wheels25.It can be learned from the text that rats______[A]appear to be adaptable to new surroundings(B]are more socially active than other animals[C]behave differently from children in socializing[D]are more sensitive to social cues than expectedText2It is fashionable today to bash Big Business.And there is one issue on which the many critics agree:CEO pay.We hear that CEOs are paid too much(or too much relative to workers),or that they rig others’pay,or that their pay is insufficiently related to positive outcomes.But the more likely truth is CEO pay is largely caused by intense competition.It is true that CEO pay has gone up—top ones may make300times the pay of typical workers on average,and since the mid-l970s,CEO pay for large publicly traded American corporations has,by varying estimates,gone up by about500%The typical CEO of a top American corporation—from the350largest such companies—now makes about$18.9million a year.While individual cases of overpayment definitely exist,in general,the determinants of CEO pay are not so mysterious and not so mired in corruption.Infact,overall CEO compensation for the top companies rises pretty much.In lockstep with the value of those companies on the stock market.The best model for understanding the growth of CEO pay,though,is that of limited CEOtalent in a world where business opportunities for the top firms are growing rapidly. The efforts ofArnerica’s highest-earning l%have been one of the more dynamic elements of the global economy.It’s not popular to say,but one reason their pay has gone up so much is that CEOs really have upped their game relative to many other workers in the U.S.economy.Today’s CEO,at least for major American firms,must have many more skills than simply being able to“run the company.”CEOs must have a good sense of financial markets and maybe even how the company should trade in them.They also need better public relations skills than their predecessors,as the costs of even a minor slipup can be significant.Then there’s the fact that large American companies are much more globalized than ever before,with supply chains spread across a larger number of countries.To lead in that s stem requires knowledge that is fairlymind-boggling.There is yet another trend:virtually all major American companies are becoming tech companies,one way or another.An agribusiness company for instance,may focus on R&D in highly IT-intensive areas such as genome sequencing.Similarly;it is hard to do a good job running the Walt Disney Company just by picking good movie scripts and courting stars;you also need to build a firm capable of creating significant CGI products for animated movies at the highest levels of technical sophistication and with many frontier innovations along the way.On top of all of this,major CEOs still have to do the job they have always done—which includes motivating employees,serving as an internal role model, helping to define and extend a corporate culture,understanding the internal accounting,and presenting budgets and business plans to the board.Good CEOs are some of the world’s most potent creators and have some of the very deepest skills of understanding.26.which of the following has contributed to CEO pay rise?A.The growth in the number of cooperationsB.The general pay rise with a better economyC.Increased business opportunities for top firmsD.Close cooperation among leading economicspared with their predecessors,today’s CEOs are required to_.A.foster a stronger sense of teamworkB.finance more research and developmentC.establish closer ties with tech companiesD.operate more globalized companies28.CEO pay has been rising since the1970s despite.A.continual internal oppositionB.strict corporate governanceC.conservative business strategiesD.repeated governance warnings29.High CEO pay can be justified by the fact that it helps.A.confirm the status of CEOsB.motive inside candidatesC.boost the efficiency of CEOsD.increase corporate value30.The most suitable title for this text would be.A.CEOs Are Not OverpaidB.CEO Pay:Past and PresentC.CEOs’Challenges of TodayD.CEO Traits:Not Easy to DefineText3Madrid was hailed as a public health beacon last November when it rolled out ambitious restrictions on the most polluting cars.Seven months and one election day later,a new conservative city council suspended enforcement of the clean air zone,a first step toward its possible demise.Mayor Jose Luis Martinez-Almeida made opposition to the zone a centrepiece of his election campaign,despite its success in improving air quality.A judge has now overruled the city’s decision to stop levying fines,ordering them reinstated.But with legal baffles ahead,the zone’s future looks uncertain at best.Among other weaknesses,the measures cities must employ when left to tackle dirty air on their own are politically contentious,and therefore vulnerable.That’s because they inevitably put the costs of cleaning the air on to individual drivers—who must pay fees or buy better vehicles—rather than on to the car manufacturers whose cheating is the real cause of our toxic pollution.It’s not hard to imagine a similar reversal happening in London.The newultra-low emission zone(Ulez)is likely to be a big issue in next year’s mayoral election.And if Sadiq Khan wins and extends it to the North and South Circular roads in2021as he intends,it is sure to spark intense opposition from the far larger number of motorists who will then be affected.It’s not that measures such as London’s Ulez are useless.Far from it.Local officials are using the levers that are available to them to safeguard residents’health in the face of a serious threat.The zones do deliver some improvements to air quality,and the science tells us that means real health benefits-fewer heart attacks, stokes and premature births,less cancer,dementia and asthma.Fewer untimely deaths.But mayors and councilors can only do so much about a problem that is far bigger than any one city or town.They are acting because national governments—Britain’s and others across Europe—have failed to do so.Restrictions that keep highly polluting cars out of certain areas—city centres,”school streets”,even individual roads-are a response to the absence of alarger effort to properly enforce existing regulations and require auto companies to bring their vehicles into compliance-Wales has introduced special low speed limits to minimise pollution.We re doing everything but insist that manufacturers clean up their cars.31.Which of the following is true about Madrid’s clean air zone?[A]Its effects are questionable[B]It has been opposed by a judge[C]It needs tougher enforcement[D]Its fate is yet to be decided32.Which is considered a weakness of the city-level measures to tackle dirty air?[A]They are biased against car manufacturers.[B]They prove impractical for city councils.[C]They are deemed too mild for politicians.[D]They put too much burden on individual motorists.33.The author believes that the extension of London’s Ulez will.[A]arouse strong resistance.[B]ensure Khan’s electoral success.[C]improve the city’s traffic.[D]discourage car manufacturing.34.Who does the author think should have addressed the problem?[A]Local residents[B]Mayors.[C]Councilors.[D]National governments.35.It can be inferred from the last paragraph that auto companies-[A]will raise low-emission car production[B]should be forced to follow regulations[C]will upgrade the design of their vehicles[D]should be put under public supervisionText4Now that members of Generation Z are graduating college this spring—the mostcommonly-accepted definition says this generation was born after1995,give or take a year—the attention has been rising steadily in recent weeks.GenZs are about to hit the streets looking for work in a labor market that’s tighter than its been in decades.And employers are planning on hiring about17percent more new graduates for jobs in the U.S.this year than last,according to a survey conducted by the National Association of Colleges and Employers.Everybody wants to know how the people who will soon inhabit those empty office cubicles will differ from those who came before them.If“entitled”is the most common adjective,fairly or not,applied to milennials (those born between1981and1995),the catchwords for Generation Z are practicaland cautious.According to the career counselors and experts who study them, Generation Zs are clear-eyed,economic pragmatists.Despite graduating into the best economy in the past50years,Gen Zs know what an economic train wreck looks like.They were impressionable kids during the crash of2008,when many of their parents lost their jobs or their life savings or bo&They aren’t interested in taking any chances.The booming economy seems to have done little to assuage this underlying generational sense of anxious urgency,especially for those who have college debt-College loan balances in the U.S.now stand at a record$1.5trillion,according to the Federal Reserve.One survey from Accenture found that88percent of graduating seniors this year chose their major with ajob in mind.In a2019survey of University of Georgia students,meanwhile,the career office found the most desirable trait in a future employer was the ability to offer secure employment(followed by professional development and training,and then inspiring purpose)Job security or stability was the second most important career goal(work-life balance was number one), followed by a sense of being dedicated to a cause or to feel good about serving the greater good36.Generation Zs graduating college this spring-[A]are recognized for their abilities[B]are in favor of job offers[C]are optimistic about the labor market[D]are drawing growing public attention37.Generation Zs are keenly aware_______[A]what a tough economic situation is like[B]what their parents expect of them[C]how they differ from past generations[D]how valuable a counselor’s advice is38.The word“assuage”(line9,para2)is closet in meaning to________[A]define[B]relieve[C]maintain[D]deepen39.It can be learned from Paragraph3that Generation Zs_______[A]care little about their job performance[B]give top priority to professional training[C]think it hard to achieve work-life balance[D]have a clear idea about their future job40.Michelsen thinks that compared with milennials,Generation Zs are_______[A]less realistic[B]less adventurous[C]more diligent[D]more generousPart BDirections:Read the following text and answer the questions by choosing the most suitable subheading from the list A-G for each numbered paragraphs(41-45).There are two extra subheadings which you do not need to use.Mark your answers on the ANSWER SHEET.(10points)[A]Give compliments,just not too many.[B]Put on a good face,always.[C]Tailor your interactions.[D]Spend time with everyone.[E]Reveal,don’t hide information.[F]Slow down and listen.[G]Put yourselves in others’shoes.Five Ways to Win Over Everyone in the OfficeIs it possible to like everyone in your office?Think about how tough it is to get together15people,much less50,who all get along perfectly.But unlike in friendships,you need coworkers.You work with them every day and you depend on them just as they depend on you.Here are some ways that you can get the whole office on your side.41.If you have a bone to pick with someone in your workplace,you may try stay tight-lipped around them.But you won’t be helping either one of you.A Harvard Business School study found that observers consistently rated those who were frank about themselves more highly while those who hid lost trustworthiness.The lesson is not that you should make your personal life an open book,but rather,when given the option to offer up details about yourself or painstakingly conceal them,you should just be honest42.Just as important as being honest about yourself is being receptive to others. We often feel the need to tell others how we feel,whether it’s a concern about a project,a stray thought,or a compliment.Those are all valid,but you need to take time to hear out your coworkers,too.In fact,rushing to get your own ideas out there can cause colleagues to feel you don’t value their opinions.Do your best to engage coworkers in a genuine,back-and-forth conversation,rather than prioritizing your own thoughts.43.It’s common to have a“cubicle mate”or special confidant in a work setting.But in addition to those trusted coworkers,you should expand your horizons and find out about all the people around e your lunch and coffee breaks to meet up with colleagues you don’t always see.Find out about their lives and interests beyond the job.It requires minimal effort and goes a long way.This will help to grow your internal network,in addition to being a nice break in the work day.44-Positive feedback is important for anyone to hear.And you don’t have to be someone’s boss to tell them they did an exceptional job on a particular project.This will help engender good will in others.But don’t overdo it or be fake about it One study found that people responded best to comments that shifted from negative to positive,possibly because it suggested they had won somebody over.45.This one may be a bit more difficult to pull off but it can go a long way to achieving results.Remember in dealing with any coworker what they appreciate from an interaction.Watch out for how they verbalize with others.Some people like small talk in a meeting before digging into important matters,while other are more straightforward.Jokes that work one person won’t necessarily land with another.So, adapt your style accordingly to type.Consider the person that you’re dealing with in advance and what will get you to your desired outcome.Section III TranslationDirections:Translate the following text into Chinese.Write your translation neatly on the ANSWER SHEET.(15points)It’s almost impossible to go through life without experiencing some kind of failure.People who do so probably live so cautiously that they go nowhere.Put simply,they’re not really living at all.But,the wonderful thing about failure is that it’s entirely up to us to decide how to look at it.We can choose to see failure as“the end of the world,”or as proof of just how inadequate we are.Or,we can look at failure as the incredible learning experience that it often is.Every time we fail at something.we can choose to look for the lesson we’re meant to learn.These lessons are very important,they’re how we grow,and how we keep from making that same mistake again.Failures stop us only if we let them.Failure can also teach us things about ourselves that we would never have learned otherwise.For instance,failure can help you discover how strong a person you are.Failing at something can help you discover your truest friends,or help you find unexpected motivation to succeed.Section IV WritingPartA46.Directions:Suppose you are planning a tour of a historical site for a group of international students.Write an email to1)tell them about the site,and2)give them some tips for the tourPlease write your answer on the ANSWER SHEETDo nor use your own name,use“Li Ming”instead.(10points)Part B47.Directions:Write an essay based on the chart below.In your writing,you should1)interpret the chart,and2)give your commentsYou should write about150words on the ANSWER SHEET.(15points)2020年考研英语二答案解析Section I Use of English1.【答案】D tricky【解析】此处考察词义辨析+上下文语境。
托福TPO42阅读Passage2原文文本+题目+答案解析
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Explaining Dinosaur Extinction Dinosaurs rapidly became extinct about 65 million years ago as part of a mass extinction known as the K-T event,because it is associated with a geological signature known as the K-T boundary,usually a thin band of sedimentation found in various parts of the world(K is the traditional abbreviation for the Cretaceous,derived from the German name Kreidezeit).Many explanations have been proposed for why dinosaurs became extinct.For example,some have blamed dinosaur extinction on the development of flowering plants,which were supposedly more difficult to digest and could have caused constipation or indigestion—except that flowering plants first evolved in the Early Cretaceous,about 60 million years before the dinosaurs died out.In fact,several scientists have suggested that the duckbill dinosaurs and homed dinosaurs,with their complex battery of grinding teeth,evolved to exploit this new resource of rapidly growing flowering plants Others have blamed extinction on competition from the mammals,which allegedly ate all the dinosaur eggs—except that mammals and dinosaurs appeared at the same time in the Late Triassic,about 190 million years ago,and there is no reason to believe that mammals suddenly acquired a taste for dinosaur eggs after 120 million years of coexistence Some explanations(such as the one stating that dinosaurs all died of diseases)fail because there is no way to scientifically test them,and they cannot move beyond the realm of speculation and guesswork. This focus on explaining dinosaur extinction misses an important point the extinction at the end of the Cretaceous was a global event that killed off organisms up and down the food chain.It wiped out many kinds of plankton in the ocean and many marine organisms that lived on the plankton at the base of the food chain.These included a variety of clams and snails,and especially the ammonites,a group of shelled squidlike creatures that dominated the Mesozoic seas and had survived many previous mass extinctions.The K-T event marked the end of the marine reptiles,such as the mosasaurs and the plesiosaurs,which were the largest creatures that had ever lived in the seas and which ruled the seas long before whales evolved.On land,there was also a crisis among the land plants,in addition to the disappearance of dinosaurs.So any event that can explain the destruction of the base of the food chain(plankton in the ocean,plants on land)can better explain what happened to organisms at the top of the food chain,such as the dinosaurs.By contrast,any explanation that focuses strictly on the dinosaurs completely misses the point The Cretaceous extinctions were a global phenomenon,and dinosaurs were just a part of a bigger picture. According to one theory,the Age of Dinosaurs ended suddenly 65 million years ago when a giant rock from space plummeted to Earth.Estimated to be ten to fifteen kilometers in diameter,this bolide(either a comet or an asteroid)was traveling at cosmic speeds of 20-70 kilometers per second,or 45,000-156,000 miles per hour.Sucha huge mass traveling at such tremendous speeds carries an enormous amount of energy.When the bolide struck this energy was released and generated a huge shock wave that leveled everything for thousands of kilometers around the impact and caused most of the landscape to burst into flames.The bolide struck an area of the Yucatan Peninsula of Mexico known as Chicxulub,excavating a crater 15-20 kilometers deep and at least 170 kilometers in diameter.The impact displaced huge volumes of seawater,causing much flood damage in the Caribbean.Meanwhile,the bolide itself excavated 100 cubic kilometers of rock and debris from the site,which rose to an altitude of 100 kilometers.Most of it fell back immediately,but some of it remained as dust in the atmosphere for months.This material,along with the smoke from the fires,shrouded Earth,creating a form of nuclear winter.According to computerized climate models,global temperatures fell to near the freezing point,photosynthesis halted,and most plants on land and in the sea died.With the bottom of the food chain destroyed,dinosaurs could not survive. paragraph 1 Dinosaurs rapidly became extinct about 65 million years ago as part of a mass extinction known as the K-T event,because it is associated with a geological signature known as the K-T boundary,usually a thin band of sedimentation found in various parts of the world(K is the traditional abbreviation for the Cretaceous,derived from the German name Kreidezeit).Many explanations have been proposed for why dinosaurs became extinct.For example,some have blamed dinosaur extinction on the development of flowering plants,which were supposedly more difficult to digest and could have caused constipation or indigestion—except that flowering plants first evolved in the Early Cretaceous,about 60 million years before the dinosaurs died out.In fact,several scientists have suggested that the duckbill dinosaurs and homed dinosaurs,with their complex battery of grinding teeth,evolved to exploit this new resource of rapidly growing flowering plants Others have blamed extinction on competition from the mammals,which allegedly ate all the dinosaur eggs—except that mammals and dinosaurs appeared at the same time in the Late Triassic,about 190 million years ago,and there is no reason to believe that mammals suddenly acquired a taste for dinosaur eggs after 120 million years of coexistence Some explanations(such as the one stating that dinosaurs all died of diseases)fail because there is no way to scientifically test them,and they cannot move beyond the realm of speculation and guesswork. 1.In paragraph 1,why does the author include a discussion of when flowering plants evolved? 【事实信息题】 A.To help explain why some scientists believe that the development of flowering plants led to dinosaur extinction。
2017考研英语二阅读真题及答案
2017考研英语⼆阅读真题及答案 本⽂“2017考研英语⼆阅读真题及答案”，跟着店铺来了解⼀下吧。
希望能帮到您！ 2017年全国硕⼠研究⽣⼊学统⼀考试英语(⼆) Section I Use of English Directions： Read the following text。
Choose the best word (s) for each numbered blank and mark A， B， C or D on the ANSWER SHEET。
(10 points) People have speculated for centuries about a future without work 。
Today is no different， with academics， writers，and activists once again 1 that technology be replacing human workers。
Some imagine that the coming work-free world will be defined by 2 。
A few wealthy people will own all the capital， and the masses will struggle in an impoverished wasteland。
A different and not mutually exclusive 3 holds that the future will be a wasteland of a different sort， one 4 by purposelessness： Without jobs to give their lives 5 ， people will simply become lazy and depressed。
新概念2英语听力原文
20. Fishing is my favourite sport. I often fish for hours without catching anything. But this does not worry me. Some fishermen are unlucky. Instead of catching fish, they catch old boots and rubbish. I am even less lucky. I never catch anything—not even old boots. After having spent whole mornings on the river, I always go home with an empty bag. 'Y ou must give up fishing!' my friends say.' It's a waste of time.' But they don't realize one impor tant thing. I'm not really interested in fishing. I am only interested in sitting in a boat and doing nothing at all !21. Aeroplanes are slowly driving me mad. I live near an airport and passing planes can be heard night and day. The airport was built during the war, but for some reason it could not be used then. Last year, however, it came into use. Over a hundred people must have been driven away from their homes by the noise. I am one of the few people left. Sometimes I think this house will be knocked down by a passing plane. I have been offered a large sum of money to go away, but I am determined to stay here. Everybody says I must be mad and they are probably right.22. My daughter, Jane, never dreamed of receiving a letter from a girl of her own age in Holland. Last year, we were travelling across the Channel and Jane put a piece of paper with her name and address on it into a bottle. She threw the bottle into the sea. She never thought of it again, but ten months later, she received a letter from a girl in Holland. Both girls write to each other regularly now. However, they have decided to use the post-office. Letters will cost a litt1e more, but they will certainly travel faster.23. I had a letter from my sister yesterday. She lives in Nigeria. In her letter, she said that she would come to England next year. If she comes, she will get a surprise. We are now living in a beautiful new house in the country. Work on it had begun before my sister left. The house was com pleted five months ago. In my letter, I told her that she could stay with us. The house has many large rooms and there is a lovely garden. It is a very modern house, so it looks strange to some people. It must be the only modern house in the district.24. entered the hotel manager's office and sat down. I had just lost &50 and I felt very upset.' I left the money in my room,' I said, 'and it's not there now.' The manager was sympathetic, but he could do nothing. 'Everyone's losing money these days,' he said. He started to com plain about this wicked world but was interrupted by a knock at the door. A girl came in and put an envelope on his desk. It contained &5o. 'I found this outside this gentleman's room' she said. 'Well,' I said to the manager, 'there is still some honesty in this world !'25. I arrived in London at last. The railwaystation was big, black and dark. I did not know the way to my hotel, so I asked a porter. I not only spoke English verycarefully, but very clearly as well. The porter, however, could not understand me; I repeated my question several times and at last he understood. He answered me, but he spoke neither slowly nor clearly. 'I am a foreigner,' I said. Then he spoke slowly, but I could not under stand him. My teacher never spoke Eng- lish like that! The porter and I looked at each other and smiled. Then he said something and I understood it. 'Y ou'll soon learn English!' he said. I wonder. In England, each man speaks a different language. The English understand each other, but I don't understand them ! Do they speak English ?。
2的书写方法
2的书写方法在日常生活中，我们经常会涉及到数字2的书写。
无论是在学习、工作还是生活中，正确的书写方法都是非常重要的。
下面，我们就来详细了解一下数字2的书写方法。
首先，我们要明确数字2的基本形态。
数字2是阿拉伯数字中的一个，它的基本形态是一个弯曲的弧线，上面有一个小圆圈。
这是我们最常见的数字2的书写形式，也是最标准的书写形式。
在书写时，我们需要注意保持数字2的整体形状，保持圆润、匀称，不要出现歪斜、变形等情况。
其次，我们要注意数字2的书写顺序。
在书写数字2时，一般是从上到下、从左到右的书写顺序。
首先画出数字2的上半部分的曲线，然后再画下半部分的曲线，最后在上半部分的曲线上方画一个小圆圈。
这样的书写顺序可以帮助我们更好地掌握数字2的书写方法，保持数字的整体形状和美观度。
除了基本形态和书写顺序外，我们还需要了解数字2的书写规范。
在正式的文件、文书、报告中，数字2的书写需要符合一定的规范。
一般来说，数字2要与其他数字保持一致的字体、大小和风格，以保持整个文档的统一性和美观度。
在手写时，我们也需要注意字迹工整、规范，避免出现潦草、模糊的情况。
此外，数字2的书写还需要注意与其他数字的区分。
在一些情况下，数字2可能会与字母z混淆，因此在书写时要特别小心，确保数字2的书写清晰可辨，不会引起误解。
总的来说，正确的数字2的书写方法对我们的学习、工作和生活都是非常重要的。
通过掌握数字2的基本形态、书写顺序和书写规范，我们能够更好地书写出整洁、规范的数字2，提高书写质量，避免出现错误和混淆。
希望大家能够重视数字2的书写方法，不断提升自己的书写水平，为自己的学习和工作增添亮点。
外研社新课标高中英语必修2课文
外研社新课标必修二课文Module 1 Zhou KaiWhen Zhou Kai’s mother saw him heading towards the front door without a jacket on, she eyed him anxiously.“Zhou Kai, where are you going?” she asked.“To the park. I’m gong to play football,” said Zhou Kai.“But it’s raining! Y ou’ll catch a bad cold,” said his mother.“No, I won’t. I’ll be fine,” said Zhou Kai, as he opened the door.“Zhou Kai, you’ll get ill. Y ou know you will. Y ou can at least go and get your jacket.”“OK, OK” Zhou Kai went and did as he was told.Zhou Kai (2)My mother has always made sure we eat very healthily, and fresh fruit and vegetables are a very important part of our diet. We live near the sea and we have fish about four times a week. We don’t eat much fat or sugar. A lot of my school f riends eat sweets every day but I’m lucky because I don’t have a sweet tooth ----I’d rather eat a nice piece of fruit. And I’m not too heavy, so I never have to diet, or anything like that.I’m quite healthy. I very rarely get colds, although, unusually for me, I had a bad cold and a bit of a fever last week. But that’s because I was stupid enough to play football in the rain. I don’t often get things like flu either. Last winter almost all my class mates got flu ----but I didn’t.I think I don’t get these things because I take a lot of exercise and am very fit. Two years ago I broke my arm playing football. The injury was quite painful and I couldn’t move my arm for month----I hated that.So as you can see from what I’ve said, I’m a normal kind of perso n.But there’s one thing I really love ----I’m crazy about football.I’m captain of the class team at school and I’m also a member of the Senior High team.Because of this, I make sure that I have a good diet, and as I’ve said, this isn’t a problem becaus e my mother feeds us so well.CULTURAL CORNERThe health care system of a country is very important and different countries have different ways of paying for it. Britain was the first country in the world to have a free health care system paid for by the government. Health care is free for everyone living in Britain. Most doctors and nurses work for the government and most hospitals are owned by the government. Until recently this system was very successful but recently there have been problems. This is because the government9has not put enough money into the health service. As a result, more people are using private health insurance. They see doctors who work for themselves and pay the doctors through the health insurance company.In America the system is very different. Most people have private health insurance. Doctors work for themselves and hospitals are privately owned. The health insurance company pays the doctors and the hospitals. The problem with this system is that poorer people don’t have to pay for private health insurance. As a result, they often have both health and money problems.Canada has a different system again. Health care is free. Doctors work privately and hospitals are privately owned. When you become ill, medical fees are paid for by the government.Module 2Article 1 No DrugsMy name is Adam Rouse. I'm 19 years old and I used to be a drug addict. I first started using drugs when I was 15. I bought cannabis from a man in the street. I continued to buy cannabis from the same man for about six months. One day, he offered me some crack cocaine.Article 2Cocaine is a powerfully addictive drug. Some drug users inject cocaine, others smoke it. Both ways are dangerous. Users who inject the drug are also in more danger if they share needles with other users.Crack cocaine is the most addictive form of cocaine. Users become addicted to crack cocaine much more easily if they smoke it. Smoking allows cocaine to reach the brain very quickly.When I went back to the man again, I wanted more crack cocaine. But he asked me for a lot of money. I didn't have enough money so he didn't give me any drugs. I was in terrible pain.The next day, I broke into a house and stole a television and a video recorder. I took them to the drug dealer. He told me to take them to a shop in a nearby street. The man in the shop gave me some money. I took the money to the drug dealer and he gave me some more crack cocaine.Using cocaine increases the user's heart rate and blood pressure.As a result, cocaine users sometimes have heart attacks. Smoking crack cocaine also causes anti-social behaviour.By this time, I was addicted to crack cocaine. If I didn't have any drugs, I was in terrible pain. And I had to steal something every day to pay for the drugs.One day, the police took me to the police station.The next day, a doctor came to see me. He told me that I could die if I didn't stop taking crack cocaine, so I took his advice and stopped immediately.Now I work in a centre for drug addicts, helping others to stop taking drugs.10CULTURAL CORNERStop Smoking Now—W e Can Help!In almost every US city and town, there are local organisations to help people stop smoking. Participants learn to recognize smoking triggers (things that start them smoking) and they try to set a date in the future when they will stop smoking.One of the most popular and successful is the California Smokers' Helpline. Here is an extract from one of their leaflets.When you really want a cigarette—try the four Ds:1Delay: Look at your watch and wait for a couple of minutes. If you can wait two minutes, you won't want to smoke.2Distraction: Whatever you're doing when you want to smoke—do something else! For example, if you're alone, find someone to talk to. If you're sitting down, take a short walk.3 Drink water: If you drink water, you reduce the need to have something in your mouth.4Deep breathing: Breathe in slowly and deeply. Count to five when your lungs are full. Then breathe out slowly. Repeat several times.And here are some ideas to help people to give up smoking:1Make a plan: Make a list of friends who smoke and places where you smoke. Don't see those people and don't go to those places!2Set a date when you're going to stop: Choose a time when you will be relaxed but also too busy to think about smoking.3Keep busy: Instead of smoking, make a phone call, take a short walk, talk with a friend.4Develop new interests: Exercise—walking, hiking, jogging, swimming, or taking a gymnastic class—helps you to forget about cigarettes.Module 3 MusicJoseph Haydn (1732--1809) was an Austrian composer and is known as "the father of the symphony". Other composers had written symphonies before Haydn, but he changed the symphony into a long piece for a large orchestra.He was born in a village in Austria, the son of a peasant. He had a beautiful singing voice. After studying music in V ienna, Haydn went to work at the court of a prince in eastern Austria, where he became director of music.Having worked there for 30 years, Haydn moved to London, where he was very successful.11Mozart (1756--1791) was a composer, possibly the greatest musical genius of all time. He only lived 35 years and he composed more than 600 pieces of music.Wolfgang Amadeus Mozart was born in Salzburg, Austria. His father Leopold was a musician and orchestra conductor. Wolfgang had musical talent from a very early age. He learned to play the harpsichord when he was four, he started composing music when he was five, and when he was six, he played the harpsichord in a concert for the Empress of Austria.By the time he was 14, Mozart had composed many pieces for the harpsichord, piano and violin, as well as for orchestras.While he was still a teenager, Mozart was already a big star and toured Europe giving concerts.Haydn met Mozart in 1781 and was very impressed with him."He is the greatest composer the world has known," he said. The two were friends until Mozart's death in 1791.Ludwig van Beethoven (1770 - 1827) was born in Bonn, Germany. He showed musical talent when he was very young, and learned to play the violin and piano from his father, who was a singer. Mozart met Beethoven and was impressed by him. "He will give something wonderful to the world," he said.Beethoven met Haydn in 1791, but was not impressed by the older man. After they had known each other for many years, Beethoven said, "He is a good composer, but he has taught me nothing." However, it was Haydn who encouraged Beethoven to move to Vienna.Beethoven became very popular in the Austrian capital and stayed there for the rest of his life. As he grew older, he began to go deaf. He became completely deaf during the last years of his life, but he continued composing.CULTURAL CORNERY e XiaogangY e Xiaogang, who was born in 1955,is one of a group of Chinese composers known as the New Tide. He writes symphonies and pieces for smaller groups of musicians. He also writes film music. He showed musical ability at an early age and began studying piano when he was four years old.From 1978 till 1983, he studied at the Central Conservatory of Music of China. After graduation, he worked there as a lecturer.In 1985, there was a concert of Y e Xiaogang's symphonies in Beijing. From that time, he has been one of the leading modern composers of Chinese classical music. In 1986, his album Horizon appeared and his music was played at the First Contemporary Chinese Composers' Festival in Hong Kong. He is famous for mixing Chinese musical traditions with western forms and instrumentation.Y e is a member of the Beijing music group Eclipse. Eclipse is perhaps the first independent12music group in China which plays works by modern Chinese composers. In November 1996, the group played with Italian musician Enrico Rava at the Beijing International Jazz Festival.Y e Xiaogang has received many prizes, in China and in other countries. Since 1993, he has worked part of the time in Beijing and part of the time in the US. He's a professor of music at the Central Conservatory of Music of China, and composes pieces for the Shanghai Symphony Orchestra.MODULE 4 Fine Arts-W estern Chinese and Pop Arts A．This is a painting by the Spanish artist, Pablo Picasso, considered to be the greatest western artist of the twentieth century. Picasso and another painter, George Braque, started Cubism, one of the most important of all modern art movements.Cubist artists painted objects and people, with different aspects of the object or person showing at the same time.This painting by contemporary American artist Roy Lichtenstein (1923 -1997) is a world famous example of pop art.Pop art (from the word "popular") was an important modern art movement that aimed to show ordinary twentieth-century city life. For example, it shows things such as soup cans and advertisements.Qi Baishi (1863-1957), one of the China's greatest painters, followed the traditional Chinese style of painting. Chinese painting is known for its brush drawings in black inks and natural colours. Qi Baishi observed the world of nature very carefully, and his paintings are special because of this.Xu Beihong (1895-1953) was one of China's best-known twentieth-century artists.Like Qi Baishi, Xu painted in the traditional Chinese style.Both painters have a beautiful brush line.Xu Beihong believed that artists should show reality, but not just imitate it. Instead, a picture should try to show the "life" of its subject. He is most famous for his lively paintings of horses..I'm studying art at school, and I enjoy it a lot, although I can get tired of looking at pictures all the time. I'm crazy about the paintings of Qi Baishi, and this delightful picture of the little shrimps is such a lovely example of his work. But I can't stand that picture of a golden-haired girl. I think it's stupid.My parents are fond of going to art galleries and often take me with them, so I've developed an interest in art. I must say, I love that picture of the six horses. They look so alive. It's by a Chinese artist, isn't it? I can tell by the style. I think the painting of the young girl is probably by Picasso. I really like him. I think he's an extraordinary artist.13CULTURAL CORNERPeople generally agree that Pablo Picasso, who lived from 1881 to 1973, is the twentieth-century's greatest western artist. He was born in Spain and at the age of ten was already an excellent artist. He had his first exhibition at the age of 16. Picasso studied art in Spain, but moved to France, in his early twenties. From 1902 to 1904 he painted a series of pictures where the main colour was blue. These pictures showed poor, unhappy people and are known as Picasso's "blue period". From 1904 to 1906 Picasso painted much happier pictures in the colour pink. This period was known as Picasso's "pink period".With another Spanish artist called George Braque, Picasso then started an important new artistic movement called Cubism. Picasso's first Cubist paintings were all painted in brown and grey. People agree that Picasso's greatest Cubist painting is Guernica, which was painted in Madrid in 1937. Guernica is the name of a town that was destroyed during the 1930s war in Spain. In this painting, Picasso showed his feelings about what had happened to the town.MODULE 5 Newspapers and MagazinesChinese Taikonaut Back on Earth!China's first taikonaut Lieutenant Colonel Y ang Liwei landed safely this morning in the Shenzhou V capsule in Inner Mongolia, 300 kilometres northwest of Beijing. Y ang was in space for twenty-one and a half hours and made 14 orbits of the earth."It is a great moment in the history of China—and also the greatest day of my life," said Y ang. When he was orbiting in the capsule, he took photographs of planet earth."Our planet is so beautiful," he said.The Beijing Space Control Centre said the flight was a "complete success". When Y ang landed, Premier Wen Jiabao telephoned the Control Centre to offer his congratulations.When Y ang took off from Jiuquan in northwest China at 9 am yesterday, China became the third nation to send a man into space.Y ang is the 438th person to travel in space, including astronauts from 32 countries. In total, these astronauts have spent more than 26,000 days in space.While he was travelling in space, Y ang spoke to two astronauts aboard the International Space Station, which is orbiting the earth, American astronaut Edward Lu and Russian cosmonaut Y uri Malenchenko.Lu, whose parents were born in China, spoke to Y ang in Chinese during his flight. "Welcome to space," he said. Malenchenko said, "I am glad there is somebody else in space with us. It's great work by thousands and thousands of people from China."Many countries around the world sent messages of congratulations. Sean O'Keefe from NASA14(National Aeronautics and Space Administration) in the US said that Y ang's space flight was "an important historical achievement and NASA wishes China continuing success with its space flight programme". United Nations Secretary-General Kofi Annan called the flight "a step forward for the whole world".CULTURAL CORNERDaily Newspapers in Britain and the United StatesNewspapers in Britain can be divided into the quality press (more serious newspapers) and the popular press. Quality newspapers have home and international news, and sports and cultural events. They also carry financial reports, travel news and book and film reviews.Popular newspapers are also known as tabloids. They have large headlines, a lot of big photographs and concentrate on news and events about famous people, and news about the British royal family.The Times is the most famous of the quality newspapers. It began in 1785. It is read by important people such as politicians, lawyers and businessmen. The Sun, founded in 1964, is the most successful of the popular newspapers. Around four million people read it every day and it sells more than any other daily newspaper.In the United States, newspapers usually have the name of the city where they are produced (for example, The New York Times ). Y ou can buy the bigger ones all over the country. The US also has a lot of tabloid newspapers, such as The New York Daily News, which are similar to British tabloids.MODULE 6 Films and TV ProgrammesFilm Review: Crouching Tiger, Hidden DragonMartial arts films are often enjoyable but they are seldom great art. Now, to everyone's surprise, Ang Lee, director of a number of excellent films, has made a martial arts film called Crouching Tiger, Hidden Dragon. The result is a masterpiece.The film belongs to a type of Chinese story called wuxia.These stories tell of nineteenth-century martial arts masters with unusual abilities. Wuxia films are popular in China, and they are now popular in the west too.The story takes place in the early 1800s in China.A man and a woman, Li Mubai (played by Chow Y un-Fat) and Y u Xiulian (played by Michelle Yeoh), both masters of the martial arts, are in15love with each other. But Xiulian had a fiancé who has died. Because this fiancé was a good friend of Mubai, Mubai feels that he cannot marry Xiulian. When someone steals Xiulian's sword, Mubai and Xiulian try to get it back. The action takes place on Peking rooftops, and in places as far away as the deserts of western China. As in the old wuxia stories, characters leap through the air every now and then, with beautiful, graceful movements, while audiences shout in surprise.Unusually, it is the female characters that interest us most. Brave, good and strong, Xiulian is the character we care about most.Beautiful Zhang Ziyi plays the part of Y u Jiaolong, a young woman who is not as good as she seems. The fight scenes between Jiaolong and Xiulian are some of the most exciting moments in modern cinema. But one cannot forget the wonderful Chow Y un-Fat, who is as good with a sword as he is with a gun.His romantic scenes with Y u Xiulian are very moving, as their eyes show all the love that they must not express in words.Film like this rarely reach the cinema.Go and see Crouching Tiger, Hidden Dragon.It will make your heart leap with excitement at its beauty.CULTURAL CORNERSteven Spielberg—Film DirectorAsk a young person in the street who the greatest American film director is, and you may get the answer Steven Spielberg. He has certainly made more successful films than any other director in the west.Spielberg was born in the state of Ohio, America, in 1946. He showed that he had unusual abilities when he was very young, completing his first 15-minute home movie at the age of 13. When he was 16 he made a 135-minute home movie called Firelight. This was shown at a local cinema and made $100.At the age of 24, Spielberg made a 26-minute film called Amblin. A Hollywood film studio liked it and employed Spielberg to make a full-length film. This film, Sugarland Express, made in 1974, had some success. Spielberg's next film was Jaws, a film about a shark that ate people. This was one of the most successful films of all time. Other wonderful films followed: E.T.—The Extra Terrestrial (1982), The Indiana Jones Trilogy, Jurassic Park(a film about dinosaurs), and Schindler's List. For this last film Spielberg won an Oscar, Hollywood's highest prize.For many years, Spielberg could not make a mistake. However, in the last fifteen years, some of his films have been less successful. But it is generally agreed, that he, more than anyone else in the history of films, understands the meaning of the word "entertainment".16。
国开(中央电大)专科《人文英语2》网上形考(单元自测1至8)试题及答案
国开(中央电大)专科《人文英语2》网上形考(单元自测1至8)试题及答案国开(中央电大)专科《人文英语2》网上形考(单元自测1至8)试题及答案说明：课程代码：04014；适用专业及层次：法学、广告、汉语言文学、教育管理、社会工作、小学教育和学前教育专科；考试平台：http：//。
单元自测1试题及答案题目为随机，用查找功能(Ctrl+F)搜索题目[题目]_____dangerous it is to ride fast on a busy road![答案]How[题目]_____pity you missed the lecture again![答案]What a[题目]-.What do you think about my hometown？-_____________________.[答案]The greatest part about the town,in my opinion,is the beautiful lake and mountain.[题目]-What about mailing itin the fastest way？-_____________________.[答案]By air mail[题目]-Wouldyou like me to help you to make a plan today for the summer vacation？-_____________________.[答案]It is nice of you to say so,but I＇m busy tonight.[题目]-Wow!This is a marvelous room!You must spend a lot of timeand energy in it.-_____________________.[答案]Thanks you.It really cost me that much.[题目]–How far is the Great Bay from your house？-_____________________.[答案]The Great Bay is five minutes away from my house and it＇s fantastic.[题目]A double room with a balcony overlooking the seahad been_____for him.[答案]reserved[题目]At a time of this economic crisis, our_____should be very clear about what we need to do.[答案]priority[题目]Criminals are given the_____of going to jail or facing public humiliation. [答案]option[题目]If there is any change about the time of the meeting,please notify us_____.[答案]in advance[题目]The Chinese Red Crosscontributed a_____sum to the relief of the physically disabled.[答案]general[题目]There_____two hundred dollars to pay.[答案]is[题目]There must be something wrong with my computer,_____there？[答案]isn＇t二、英译汉：为句子选择正确的翻译。
运筹学自测试卷2
运筹学自测试卷2一、单项选择题1使用人工变量法求解极大化的线性规划问题时，当所有的检验数0j ,但在基变量中仍含有非零的人工变量，表明该线性规划问题 ( D )A ．有唯一的最优解B ．有无穷多最优解C ．为无界解D ．无可行解2当线性规划的可行解集合非空时一定（ D ） A.包含原点 B.有界 C ．无界 D.是凸集3线性规划具有多重最优解是指（ B ） A.目标函数系数与某约束系数对应成比例。
B ．最优表中存在非基变量的检验数为零。
C ．可行解集合无界。
D ．存在基变量等于零。
4使用人工变量法求解极大化线性规划问题时，当所有的检验数0j σ≤，在基变量中仍含有非零的人工变量，表明该线性规划问题（ C ）A. 有唯一的最优解；B. 有无穷多个最优解；C . 无可行解；D. 为无界解5在产销平衡运输问题中，设产地为m 个，销地为n 个，那么基可行解中非零变量的个数（ A ）A . 不能大于(m+n -1)； B. 不能小于(m+n -1)； C. 等于(m+n -1)； D. 不确定。
6如果要使目标规划实际实现值不超过目标值。
则相应的偏离变量应满足（B ）A. 0d +> B . 0d += C. 0d -= D. 0,0d d -+>> 7下列说法正确的为（ D ）A ．如果线性规划的原问题存在可行解，则其对偶问题也一定存在可行解B ．如果线性规划的对偶问题无可行解，则原问题也一定无可行解C ．在互为对偶的一对原问题与对偶问题中，不管原问题是求极大或极小，原问题可行解的目标函数值都一定不超过其对偶问题可行解的目标函数D ．如果线性规划问题原问题有无界解，那么其对偶问题必定无可行解 4.用最小元素法求初始调运方案是，运输表中数字格的个数为（D ）个。
m*n B 、m+n C 、m*n -1 D 、m+n -18对于第二类存储模型——进货能力有限，不允许缺货，下列哪项不属于起假设前提条件（ D ）A 需求是连续，均匀的B 进货是连续，均匀的C 当存储降至零时，可以立即得到补充D 每个周期的定货量需要一次性进入存储，一次性满足 9对于风险型决策问题，下列说法错误的是（ D ）A 风险型决策问题是指决策者根据以往的经验及历史统计资料，可以判明各种自然 因素出现的可能性大小B 风险型决策除了满足一般决策问题的四个条件外，还需要加一个条件：存在两个或两个以上的自然因素，并可估算所有自然因素出现的概率C 期望值法就是决策者根据各个方案的期望值大小，来选择最优方案D 确定型决策其实是风险型决策的一个特例，即自然因素出现的概率为0，而其他自然因素出现的概率为1的风险型决策问题10下面哪些不是线性规划问题的标准形式所具备的（ C ）A所有的变量必须是非负的 B 所有的约束条件（变量的非负约束除外）必须是等式C 添加新变量时，可以不考虑变量的正负性D 求目标函数的最小值11下面哪项不是求解“不确定型决策问题”的方法（B ）A 悲观法B 期望值法C 折衷法D 最小遗憾法12用单纯形法求解线性规划问题时引入的松弛变量在目标函数中的系数为（A）A．0 B.1 C.-1 D.213如果要使目标规划实际实现值不超过目标值。
三全中,三中二,二中二,计算公式
号码复式三中三,三中二计算方法:n(n-1)---------=二中二的组数,如10个号是（10×9÷2）＝45组!2n(n-1)(n-2)---------------- =三中二（或三中三）的组数,如10个号（10×9×8÷6）＝120组!3*2 *1n(n-1)(n-2)(n-3)----------------------- =四中四（或四中二）的组数,如10个号（10×9×8×7÷24）＝210组!4* 3*2 *1n(n-1)(n-2)(n-3)(n-4)---------------------------- =五中五（或五中二）的组数,如10个号（10×9×8×7×6÷120）＝252组!5* 4* 3*2 *1n(n-1)(n-2)(n-3)(n-4)(n-5)--------------------------------- =六中六（或六中二）的组数,如10个号（10×9×8×7×6×5÷720）＝210组! 6* 5* 4* 3* 2 * 1复式连（三中三）（三中二）赔率表:===============================================组合个数‖ 组数‖ 中二个‖ 中三个‖ 中四个‖ 中五个 ‖ 中六个 ‖===============================================4 ‖ 4 ‖ 2组 ‖ 3组＋1 ‖ 0组＋4 ‖===============================================5 ‖ 10 ‖ 3组 ‖ 6组＋1 ‖ 6组＋4 ‖ 0组＋10‖===============================================6 ‖ 20 ‖ 4组 ‖ 9组＋1 ‖ 12组＋4‖ 10组＋10 ‖ 0组＋20‖===============================================7 ‖ 35 ‖ 5组 ‖ 12组＋1‖ 18组＋4‖ 20组＋10‖ 15组＋20‖===============================================8 ‖ 56 ‖ 6组 ‖ 15组＋1‖ 24组＋4‖ 30组＋10‖ 30组＋20‖===============================================9 ‖ 84 ‖ 7组 ‖ 18组＋1‖ 30组＋4‖ 40组＋10‖ 45组＋20‖===============================================10 ‖ 120 ‖ 8组 ‖ 21组＋1‖ 36组＋4‖ 50组＋10‖ 60组＋20‖===============================================11 ‖ 165 ‖ 9组 ‖ 24组＋1 ‖ 42组＋4‖ 60组＋10‖ 75组＋20‖===============================================12 ‖ 220 ‖ 10组 ‖ 27组＋1‖ 48组＋4‖ 70组＋10‖ 90组＋20‖===============================================13 ‖ 286 ‖ 11组 ‖ 30组＋1‖ 54组＋4‖ 80组＋10‖ 105组＋20‖===============================================14 ‖ 364 ‖ 12组 ‖ 33组＋1‖ 60组＋4‖ 90组＋10‖ 120组＋20‖===============================================15 ‖ 455 ‖ 13组 ‖ 36组＋1‖ 66组＋4‖ 100组＋10‖ 135组＋20‖===============================================组合个数‖ 组数‖ 中二个‖ 中三个‖ 中四个‖ 中五个 ‖ 中六个 ‖===============================================2中2复式计算公式2个码=2*1/2=1组2中2复式计算公式3个码=3*2/2=3组3中3复式计算公式3个码=3*2*1/6=1组3中3复式计算公式4个码=4*3*2/6=4组4中4复式计算公式4个码=4*3*2*1/24=1组4中4复式计算公式5个码=5*4*3*2/24=5组5中5复式计算公式5个码=5*4*3*2*1/120=1组5中5复式计算公式6个码=6*5*4*3*2/120=6组6中6复式计算公式6个码=6*5*4*3*2*1/720=1组6中6复式计算公式7个码=7*6*5*4*3*2/720=7组7中7复式计算公式7个码=7*6*5*4*3*2*1/5040=1组7中7复式计算公式8个码=8*7*6*5*4*3*2/5040=8组注：其实很简单，所有的复式都有公式可算的，全有关连，细看一定能看出的。
2的乘法口诀表
2的乘法口诀表以下是十个关于2的乘法口诀：口诀一：一二得二嘿，小朋友们，一二得二可简单啦。
你就想啊，一个小娃娃有两只小手，这就是一二得二。
就像你每天早上拿两支铅笔准备写作业一样，一份东西是两个，这就是二呀。
这个口诀就像你打开数学小宝藏的第一把小钥匙，它能让你知道1和2相乘的结果就是2，记住这个小口诀，以后做数学题就像走平坦的小路一样顺畅哦。
口诀二：二二得四小朋友们呀，二二得四也好记呢。
你看，两个小鸭子是一组，再来一组同样的两个小鸭子，那一共就有四只小鸭子啦，这就是二二得四。
就好像你有两双小袜子，一双袜子是两只，两双不就是四只嘛。
这个口诀就像是两个小伙伴手拉手，它们紧紧挨在一起，结果就是4这个数字，是不是很容易就记住啦？口诀三：二三得六来喽，二三得六要记好。
想象一下，你有两朵小花，每朵小花有三个花瓣，那花瓣的总数就是二三得六。
或者说呀，有两个小盘子，每个盘子里放三颗小糖果，数一数，一共就是六颗糖果呢。
这就像两个三口之家在一起，总人数就是六个人。
这个口诀很实用的，以后做数学游戏的时候经常会用到哦。
口诀四：二四得八小朋友们听好啦，二四得八不难想。
你可以把它想象成有两条小虫子，每条小虫子有四个小脚，那小脚的总数就是二四得八。
再比如，有两个小盒子，每个小盒子里装着四个小弹珠，全部加起来就是八个小弹珠。
就像两个四边形，每个四边形有四条边，总共的边数就是八条边，这个口诀记住了，做数学就又多了一点小本事呢。
口诀五：二五一十嗨，二五一十很顺口的。
你看，我们一只手有五个手指头，那两只手呢？就有十个手指头啦，这就是二五一十。
又或者有两个小篮子，每个小篮子里装着五个小苹果，那苹果的总数就是十个。
就像两个五角星，每个五角星有五个角，加起来就是十个角。
这个口诀在生活中也经常能用到呢，像数东西的时候。
口诀六：二六十二小朋友，二六十二也不难哦。
想象一下，有两串糖葫芦，每串糖葫芦有六个山楂果，那山楂果的总数就是二六十二。
再好比有两个小书架，每个小书架有六层，那总共的层数就是十二层。
2是什么意思
2是什么意思
2是一个网络用语，通常有多种理解意思，可以理解为“爱”，理解为“笨”、“傻”的意思，也可以形容一个人很活泼开朗、幽默并且个性，还可以用来形容人呆住、无语。
众所周知，在网络中，2通常有多种理解意思，一种理解为“爱”，如数字串“520”=我爱你，数字串“5201314”=我爱你一生一世，数字串“258”=爱我吧，数字串“7758258”=亲亲我吧爱我吧，数字串“52410”=我爱死你了。
其他一种理解为“笨”、“傻”的意思。
例如250，2货。
这种意思的2来源于"62"，近似于杭州方言“盒子”，用来形容人脑袋空空比较笨。
另一种意思就是形容一个人很活泼开朗，很幽默并且个性，比如说：“很2很光芒”。
还有一种用来形容人呆住、无语的意思，如：看到这个成绩我瞬间就2了。
同时，在北京方言里，2也表示一种傻，脑子不灵活的意思。
新概念英语第四册课文及翻译：Lesson2
⽆忧考新概念频道为⼤家整理的新概念英语第四册课⽂及翻译：Lesson2，供⼤家参考。
更多阅读请查看本站频道。
【课⽂】 First listen and then answer the following question. 听录⾳，然后回答以下问题。
How much of each year do spiders spend killing insects? Why, you may wonder, should spiders be our friends? Because they destroy so many insects, and insects include some of the greatest enemies of the human race. Insects would make it impossible for us to live in the world; they would devour all our crops and kill our flocks and herds, if it were not for the protection we get from insect-eating animals. We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders. Moreover, unlike some of the other insect eaters, spiders never do the harm to us or our belongings. Spiders are not insects, as many people think, nor even nearly related to them. One can tell the difference almost at a glance, for a spider always has eight legs and an insect never more than six. How many spiders are engaged in this work on our behalf? One authority on spiders made a census of the spiders in grass field in the south of England, and he estimated that there were more than 2,250,000 in one acre; that is something like 6,000,000 spiders of different kinds on a football pitch. Spiders are busy for at least half the year in killing insects. It is impossible to make more than the wildest guess at how many they kill, but they are hungry creatures, not content with only three meals a day. It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country. 【New words and expressions ⽣词和短语】 insect n. 昆⾍ devour v. 吞⾷ flock n. ⽺群 herd n. 牧群 beast n. 野兽 fraction n. ⼩部分 census n. 统计数字 acre n. 英亩 content adj. 满⾜的 【课⽂注释】 1. you may wonder 是这个疑问句的插⼊语。
汉字二的正确写法
汉字二的正确写法汉字是中国人民的文字和文化传承的重要组成部分。
其中，汉字二作为一个常见的汉字，其正确的写法具有重要意义。
本文将探讨汉字"二"的正确写法，并提供一些书写规范和技巧。
一、笔画顺序汉字二是一个非常简单的汉字，只包含一笔，其笔画顺序非常重要。
正确的笔画顺序可以帮助书写者提高书写速度和书写准确度。
在书写汉字二时，我们应该先写横折笔画，再写竖直笔画。
二、横折笔画横折笔画是汉字二的主要组成部分。
横折笔画应该从左上角开始，向右下方倾斜，形成一个较长的横线。
横线的长度可以根据个人喜好和书写空间的限制来调整，但是要保持横线的平直和统一。
三、竖直笔画竖直笔画是汉字二的另一个组成部分。
竖直笔画应该从横折笔画的右下方开始，向下方延伸，长度与横折笔画保持一致或稍长一些。
竖直笔画要直立且与横线相交。
四、书写规范除了正确的笔画顺序外，书写汉字二还应该遵循一些书写规范，以保证字形的美观和整齐。
以下是一些常见的书写规范：1. 字形比例：汉字二的字形应该保持适当的比例，横线和竖线的长度应该相对平衡，不宜过长或过短。
2. 笔画粗细：汉字二在书写时，横线和竖线的笔画宽度应该保持相对一致，不要出现明显的粗细不均。
3. 书写速度：书写汉字二时应尽量提高书写速度，以便提高书写效率和准确度。
可以通过反复练习和多次书写来提高书写速度。
五、书写技巧除了正确的笔画顺序和书写规范外，我们还可以采用一些书写技巧来提高汉字二的书写质量。
1. 练习常用字：汉字二作为一个常见字，我们可以通过多次书写和模仿来提高书写的技巧和速度。
2. 视频教学：现在网络上有许多提供汉字书写视频教学的资源，通过观看这些视频，我们可以学习到正确的字形和书写方法。
3. 使用规范字帖：规范字帖是一种专门用来练习书写汉字的工具。
使用规范字帖可以帮助我们掌握正确的字形和书写技巧。
六、总结正确书写汉字二是每个中国人都应该掌握的基本技能之一。
通过遵循正确的笔画顺序、书写规范和使用书写技巧，我们可以提高汉字二的书写质量和美观度。
高英 2 资料
6.Para 17: I have an unending love affair with dictionaries.
--I have always had an intense and eager interest in dictionaries..
2.That’s only for show.
That’s only for pretense. The Jews only pretend to work as a poor laborer. He is in reality very rich.
3.Par. 20: though they had registered themselves on my eyeballs I cannot truly say that I had seen them.
5. 他关于医疗改革的提议引起了议会的注意。Sit up
His proposal on medical reform made the parliament
sit up .
6, 他所说的不无道理。Something
Money is something, but it is not everything
4、民众要求他辞职的呼声越来越高。（clamor）
The clamor for her resignation grew louder.
5、山里有盗贼出没。
The mountains are infested with robbers.
1. In a time of universal deceit, telling the truth is a revolutionary act.
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质控（建）表4.1.2－3 共页第页
工程名称福建海峡国际商贸城商住配套A地块施工单位中建海峡建设发展有限公司
施测部位2#楼A区地下室底板施测日期2013年8月1日
高程依据
测量仪器
及编号
检定日期
施测人复核人
测量复核
情况（简
图）
1、根据图示轴线控制线进行轴线放样，内控线距离外轴线1000mm，用全站仪进行控
制轴线闭合差复核，误差最大为+2mm，角+1＂，最小为-2mm；角+2＂；
2、高程控制点（本层标高+0.500）；
3、本层结构标高为黄海2.35m。
检查结论
项目专业技术负责人：
年月日验收结论
总监理工程师：
（建设单位项目专业技术负责人）
年月日
质控（建）表4.1.2－3 共页第页
工程名称福建海峡国际商贸城商住配套A地块施工单位中建海峡建设发展有限公司
施测部位2#楼B区地下室底板施测日期2013年8月1日
高程依据
测量仪器
及编号
检定日期
施测人复核人
测量复核
情况（简
图）
1、根据图示轴线控制线进行轴线放样，内控线距离外轴线1000mm，用经纬仪进行控
制轴线闭合差复核，误差最大为+3mm，角+1＂，最小为-1mm；角+3＂；
2、高程控制点（本层标高+0.500）；
3、本层结构标高为黄海2.35m。
检查结论
项目专业技术负责人：
年月日验收结论
总监理工程师：
（建设单位项目专业技术负责
人）
年月日
质控（建）表4.1.2－3 共页第页
工程名称福建海峡国际商贸城商住配套A地块施工单位中建海峡建设发展有限公司
施测部位2#楼A区地下室顶板施测日期
高程依据
测量仪器
及编号
检定日期
施测人复核人
测量复核
情况（简
图）
1、根据图示轴线控制线进行轴线放样，内控线距离外轴线1000mm，用全站仪进行控
制轴线闭合差复核，误差最大为+2mm，角+1＂，最小为-2mm；角+2＂；
2、高程控制点（本层标高+0.500）；
3、本层结构标高为黄海6.9m。
检查结论
项目专业技术负责人：
年月日验收结论
总监理工程师：
（建设单位项目专业技术负责人）
年月日
质控（建）表4.1.2－3 共页第页
工程名称福建海峡国际商贸城商住配套A地块施工单位中建海峡建设发展有限公司
施测部位2#楼B区地下室顶板施测日期
高程依据
测量仪器
及编号
检定日期
施测人复核人
测量复核
情况（简
图）
1、根据图示轴线控制线进行轴线放样，内控线距离外轴线1000mm，用经纬仪进行控
制轴线闭合差复核，误差最大为+3mm，角+2＂，最小为-2mm；角+3＂；
2、高程控制点（本层标高+0.500）；
3、本层结构标高为黄海6.9m。
检查结论
项目专业技术负责人：
年月日验收结论
总监理工程师：
（建设单位项目专业技术负责
人）
年月日
质控（建）表4.1.2－3 共页第页
工程名称福建海峡国际商贸城商住配套A地块施工单位中建海峡建设发展有限公司
施测部位2#楼A区二层施测日期
高程依据
测量仪器
及编号
检定日期
施测人复核人
测量复核
情况（简
图）
1、根据图示轴线控制线进行轴线放样，内控线距离外轴线1000mm，用经纬仪进行控
制轴线闭合差复核，误差最大为+3mm，角+2＂，最小为-2mm；角+3＂；
2、高程控制点（本层标高+0.500）；
3、本层结构标高为3.55m。
检查结论
项目专业技术负责人：
年月日验收结论
总监理工程师：
（建设单位项目专业技术负责
人）
年月日
质控（建）表4.1.2－3 共页第页
工程名称福建海峡国际商贸城商住配套A地块施工单位中建海峡建设发展有限公司
施测部位2#楼B区二层施测日期2013年8月1日
高程依据
测量仪器
及编号
检定日期
施测人复核人
测量复核
情况（简
图）
1、根据图示轴线控制线进行轴线放样，内控线距离外轴线1000mm，用经纬仪进行控
制轴线闭合差复核，误差最大为+2mm，角+2＂，最小为-1mm；角+3＂；
2、高程控制点（本层标高+0.500）；
3、本层结构标高为3.55m。
检查结论
项目专业技术负责人：
年月日验收结论
总监理工程师：
（建设单位项目专业技术负责
人）
年月日
质控（建）表4.1.2－3 共页第页
工程名称福建海峡国际商贸城商住配套A地块施工单位中建海峡建设发展有限公司
施测部位2#楼A区三层及以上施测日期
高程依据
测量仪器
及编号
检定日期
施测人复核人
测量复核
情况（简
图）
1、根据图示轴线控制线进行轴线放样，内控线距离外轴线1000mm，用经纬仪进行控
制轴线闭合差复核，误差最大为+3mm，角+2＂，最小为-2mm；角+3＂；
2、高程控制点（本层标高+0.500）；
3、本层结构标高为m。
检查结论
项目专业技术负责人：
年月日验收结论
总监理工程师：
（建设单位项目专业技术负责
人）
年月日
质控（建）表4.1.2－3 共页第页
工程名称福建海峡国际商贸城商住配套A地块施工单位中建海峡建设发展有限公司
施测部位2#楼B区三层及以上施测日期
高程依据
测量仪器
及编号
检定日期
施测人复核人
测量复核
情况（简
图）
1、根据图示轴线控制线进行轴线放样，内控线距离外轴线1000mm，用经纬仪进行控
制轴线闭合差复核，误差最大为+3mm，角+2＂，最小为-2mm；角+3＂；
2、高程控制点（本层标高+0.500）；
3、本层结构标高为m。
检查结论
项目专业技术负责人：
年月日验收结论
总监理工程师：
（建设单位项目专业技术负责
人）
年月日。